Ohhhhh, I sort of saw something, I guess a preview, of a show where folks disappeared years before, and are finally back and reunited with their families. Not sure if that's it, since I can't believe a TV network would preview a show that's only on Netflix.
Edited to Add: OK, I was wrong. I just saw the preview, and it's an upcoming show debuting next week on NBC called Manifest, where the 191 Passengers and its crew learn that while only a few hours passed for them, the rest of the world has considered them missing -- and presumed dead -- for over five years. As the passengers try to reintegrate themselves into the world, some of them experience strange phenomena, leading them to believe they may be meant for something greater than they even thought possible.